Just wondering what is in today's STP oil treatment? Is it the same formula from years past? I recall my father putting in a blue can of STP years ago in his Ford 429 cid powered station wagon before towing his 6,000 pound camper back in the early 1970's.

My Dad loved the stuff. Dumped in it everything. Bought it by the gallon. Never caused problems but I never thought it was a good idea dumping a thick goo in the motor. Thought it would end up in the bottom of the pan.

Just wondering what is in today's STP oil treatment? Is it the same formula from years past? I recall my father putting in a blue can of STP years ago in his Ford 429 cid powered station wagon before towing his 6,000 pound camper back in the early 1970's.

Which one?

I see three versions at WallyWorld, O'Reilley's, and Advance.

Send in a sample to Blackstone and see what elements it has in it.

It used to be mostly a very poor version of an OCP VII and thickeners.

Last edited by MolaKule; 07/23/1702:40 PM.

"I can't change the direction of the wind, but I can adjust my sails to always reach my destination." Jimmy Dean